Methods: The contents of tannin were determined by complexometry and that of amino acids by amino analyzer.

方法：用络合滴定法测定鞣质含量，用氨基酸自动分析仪测定氨基酸含量。

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Methods: The contents of tannin were determined by complexometry and that of amino acids by amino analyzer.

方法：用络合滴定法测定鞣质含量，用氨基酸自动分析仪测定氨基酸含量。

youdao